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-rw-r--r--tools/testing/selftests/Makefile1
-rw-r--r--tools/testing/selftests/hid/.gitignore5
-rw-r--r--tools/testing/selftests/hid/Makefile231
-rw-r--r--tools/testing/selftests/hid/config21
-rw-r--r--tools/testing/selftests/hid/config.common241
-rw-r--r--tools/testing/selftests/hid/config.x86_644
-rw-r--r--tools/testing/selftests/hid/hid_bpf.c869
-rw-r--r--tools/testing/selftests/hid/progs/hid.c209
-rw-r--r--tools/testing/selftests/hid/progs/hid_bpf_helpers.h21
-rwxr-xr-xtools/testing/selftests/hid/vmtest.sh284
10 files changed, 1886 insertions, 0 deletions
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 41b649452560..0bc9592b5e62 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -26,6 +26,7 @@ TARGETS += fpu
TARGETS += ftrace
TARGETS += futex
TARGETS += gpio
+TARGETS += hid
TARGETS += intel_pstate
TARGETS += iommu
TARGETS += ipc
diff --git a/tools/testing/selftests/hid/.gitignore b/tools/testing/selftests/hid/.gitignore
new file mode 100644
index 000000000000..995af0670f69
--- /dev/null
+++ b/tools/testing/selftests/hid/.gitignore
@@ -0,0 +1,5 @@
+bpftool
+*.skel.h
+/tools
+hid_bpf
+results
diff --git a/tools/testing/selftests/hid/Makefile b/tools/testing/selftests/hid/Makefile
new file mode 100644
index 000000000000..83e8f87d643a
--- /dev/null
+++ b/tools/testing/selftests/hid/Makefile
@@ -0,0 +1,231 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# based on tools/testing/selftest/bpf/Makefile
+include ../../../build/Build.include
+include ../../../scripts/Makefile.arch
+include ../../../scripts/Makefile.include
+
+CXX ?= $(CROSS_COMPILE)g++
+
+HOSTPKG_CONFIG := pkg-config
+
+CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(KHDR_INCLUDES) -I$(OUTPUT)
+LDLIBS += -lelf -lz -lrt -lpthread
+
+# Silence some warnings when compiled with clang
+ifneq ($(LLVM),)
+CFLAGS += -Wno-unused-command-line-argument
+endif
+
+# Order correspond to 'make run_tests' order
+TEST_GEN_PROGS = hid_bpf
+
+# Emit succinct information message describing current building step
+# $1 - generic step name (e.g., CC, LINK, etc);
+# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
+# $3 - target (assumed to be file); only file name will be emitted;
+# $4 - optional extra arg, emitted as-is, if provided.
+ifeq ($(V),1)
+Q =
+msg =
+else
+Q = @
+msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
+MAKEFLAGS += --no-print-directory
+submake_extras := feature_display=0
+endif
+
+# override lib.mk's default rules
+OVERRIDE_TARGETS := 1
+override define CLEAN
+ $(call msg,CLEAN)
+ $(Q)$(RM) -r $(TEST_GEN_PROGS)
+ $(Q)$(RM) -r $(EXTRA_CLEAN)
+endef
+
+include ../lib.mk
+
+TOOLSDIR := $(top_srcdir)/tools
+LIBDIR := $(TOOLSDIR)/lib
+BPFDIR := $(LIBDIR)/bpf
+TOOLSINCDIR := $(TOOLSDIR)/include
+BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
+SCRATCH_DIR := $(OUTPUT)/tools
+BUILD_DIR := $(SCRATCH_DIR)/build
+INCLUDE_DIR := $(SCRATCH_DIR)/include
+KHDR_INCLUDES := $(SCRATCH_DIR)/uapi/include
+BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
+ifneq ($(CROSS_COMPILE),)
+HOST_BUILD_DIR := $(BUILD_DIR)/host
+HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
+HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
+else
+HOST_BUILD_DIR := $(BUILD_DIR)
+HOST_SCRATCH_DIR := $(SCRATCH_DIR)
+HOST_INCLUDE_DIR := $(INCLUDE_DIR)
+endif
+HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
+RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
+
+VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
+ $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
+ ../../../../vmlinux \
+ /sys/kernel/btf/vmlinux \
+ /boot/vmlinux-$(shell uname -r)
+VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
+ifeq ($(VMLINUX_BTF),)
+$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
+endif
+
+# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
+# to build individual tests.
+# NOTE: Semicolon at the end is critical to override lib.mk's default static
+# rule for binaries.
+$(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ;
+
+# sort removes libbpf duplicates when not cross-building
+MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
+ $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \
+ $(INCLUDE_DIR))
+$(MAKE_DIRS):
+ $(call msg,MKDIR,,$@)
+ $(Q)mkdir -p $@
+
+# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
+ifeq ($(SRCARCH),x86)
+LLD := lld
+else
+LLD := ld
+endif
+
+DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
+
+TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
+
+$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
+
+BPFTOOL ?= $(DEFAULT_BPFTOOL)
+$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
+ $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
+ ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \
+ EXTRA_CFLAGS='-g -O0' \
+ OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
+ LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
+ LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
+ prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
+
+$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
+ | $(BUILD_DIR)/libbpf
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
+ EXTRA_CFLAGS='-g -O0' \
+ DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
+
+ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
+$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
+ | $(HOST_BUILD_DIR)/libbpf
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
+ EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
+ OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
+ DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
+endif
+
+$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
+ifeq ($(VMLINUX_H),)
+ $(call msg,GEN,,$@)
+ $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
+else
+ $(call msg,CP,,$@)
+ $(Q)cp "$(VMLINUX_H)" $@
+endif
+
+$(KHDR_INCLUDES)/linux/hid.h: $(top_srcdir)/include/uapi/linux/hid.h
+ $(MAKE) -C $(top_srcdir) INSTALL_HDR_PATH=$(SCRATCH_DIR)/uapi headers_install
+
+$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
+ $(TOOLSDIR)/bpf/resolve_btfids/main.c \
+ $(TOOLSDIR)/lib/rbtree.c \
+ $(TOOLSDIR)/lib/zalloc.c \
+ $(TOOLSDIR)/lib/string.c \
+ $(TOOLSDIR)/lib/ctype.c \
+ $(TOOLSDIR)/lib/str_error_r.c
+ $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
+ CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
+ LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
+ OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
+
+# Get Clang's default includes on this system, as opposed to those seen by
+# '-target bpf'. This fixes "missing" files on some architectures/distros,
+# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
+#
+# Use '-idirafter': Don't interfere with include mechanics except where the
+# build would have failed anyways.
+define get_sys_includes
+$(shell $(1) -v -E - </dev/null 2>&1 \
+ | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
+$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
+endef
+
+# Determine target endianness.
+IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
+ grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
+MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
+
+CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
+BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
+ -I$(INCLUDE_DIR)
+
+CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
+ -Wno-compare-distinct-pointer-types
+
+# Build BPF object using Clang
+# $1 - input .c file
+# $2 - output .o file
+# $3 - CFLAGS
+define CLANG_BPF_BUILD_RULE
+ $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
+endef
+# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
+define CLANG_NOALU32_BPF_BUILD_RULE
+ $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
+endef
+# Build BPF object using GCC
+define GCC_BPF_BUILD_RULE
+ $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
+endef
+
+BPF_PROGS_DIR := progs
+BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
+BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c))
+BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS))
+BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS))
+TEST_GEN_FILES += $(BPF_OBJS)
+
+$(BPF_PROGS_DIR)-bpfobjs := y
+$(BPF_OBJS): $(OUTPUT)/%.bpf.o: \
+ $(BPF_PROGS_DIR)/%.c \
+ $(wildcard $(BPF_PROGS_DIR)/*.h) \
+ $(INCLUDE_DIR)/vmlinux.h \
+ $(wildcard $(BPFDIR)/hid_bpf_*.h) \
+ $(wildcard $(BPFDIR)/*.bpf.h) \
+ | $(OUTPUT) $(BPFOBJ)
+ $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS))
+
+$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
+ $(call msg,GEN-SKEL,$(BINARY),$@)
+ $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
+ $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
+
+$(OUTPUT)/%.o: %.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h
+ $(call msg,CC,,$@)
+ $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/%: $(OUTPUT)/%.o
+ $(call msg,BINARY,,$@)
+ $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
+
+EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \
+ $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32)
diff --git a/tools/testing/selftests/hid/config b/tools/testing/selftests/hid/config
new file mode 100644
index 000000000000..9c5a55abca6b
--- /dev/null
+++ b/tools/testing/selftests/hid/config
@@ -0,0 +1,21 @@
+CONFIG_BPF_EVENTS=y
+CONFIG_BPFILTER=y
+CONFIG_BPF_JIT_ALWAYS_ON=y
+CONFIG_BPF_JIT=y
+CONFIG_BPF_KPROBE_OVERRIDE=y
+CONFIG_BPF_LSM=y
+CONFIG_BPF_PRELOAD_UMD=y
+CONFIG_BPF_PRELOAD=y
+CONFIG_BPF_STREAM_PARSER=y
+CONFIG_BPF_SYSCALL=y
+CONFIG_BPF=y
+CONFIG_CGROUP_BPF=y
+CONFIG_DEBUG_INFO_BTF=y
+CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
+CONFIG_FPROBE=y
+CONFIG_FTRACE_SYSCALLS=y
+CONFIG_FUNCTION_TRACER=y
+CONFIG_HIDRAW=y
+CONFIG_HID=y
+CONFIG_INPUT_EVDEV=y
+CONFIG_UHID=y
diff --git a/tools/testing/selftests/hid/config.common b/tools/testing/selftests/hid/config.common
new file mode 100644
index 000000000000..0617275d93cc
--- /dev/null
+++ b/tools/testing/selftests/hid/config.common
@@ -0,0 +1,241 @@
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_9P_FS_SECURITY=y
+CONFIG_9P_FS=y
+CONFIG_AUDIT=y
+CONFIG_BINFMT_MISC=y
+CONFIG_BLK_CGROUP_IOLATENCY=y
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_BLK_DEV_RAM_SIZE=16384
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_BONDING=y
+CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
+CONFIG_BOOTTIME_TRACING=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEBUG=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_HUGETLB=y
+CONFIG_CGROUP_NET_CLASSID=y
+CONFIG_CGROUP_NET_PRIO=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_RDMA=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_WRITEBACK=y
+CONFIG_CMA_AREAS=7
+CONFIG_CMA=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPUSETS=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_BLAKE2B=y
+CONFIG_CRYPTO_DEV_VIRTIO=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_XXHASH=y
+CONFIG_DCB=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_CREDENTIALS=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEFAULT_FQ_CODEL=y
+CONFIG_DEFAULT_RENO=y
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DEVTMPFS=y
+CONFIG_DMA_CMA=y
+CONFIG_DNS_RESOLVER=y
+CONFIG_EFI_STUB=y
+CONFIG_EFI=y
+CONFIG_EXPERT=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXT4_FS=y
+CONFIG_FAIL_FUNCTION=y
+CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FAULT_INJECTION=y
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_TILEBLITTING=y
+CONFIG_FB_VESA=y
+CONFIG_FB=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_MINI_4x6=y
+CONFIG_FONTS=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FUSE_FS=y
+CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_GART_IOMMU=y
+CONFIG_GENERIC_PHY=y
+CONFIG_HARDLOCKUP_DETECTOR=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_HPET=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_HWPOISON_INJECT=y
+CONFIG_HZ_1000=y
+CONFIG_INET=y
+CONFIG_INTEL_POWERCLAMP=y
+CONFIG_IP6_NF_FILTER=y
+CONFIG_IP6_NF_IPTABLES=y
+CONFIG_IP6_NF_NAT=y
+CONFIG_IP6_NF_TARGET_MASQUERADE=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_NF_NAT=y
+CONFIG_IP_NF_TARGET_MASQUERADE=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IPV6_MIP6=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_SEG6_LWTUNNEL=y
+CONFIG_IPV6_SUBTREES=y
+CONFIG_IRQ_POLL=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_KEXEC=y
+CONFIG_KPROBES=y
+CONFIG_KSM=y
+CONFIG_LEGACY_VSYSCALL_NONE=y
+CONFIG_LOG_BUF_SHIFT=21
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=0
+CONFIG_LOGO=y
+CONFIG_LSM="selinux,bpf,integrity"
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MCORE2=y
+CONFIG_MEMCG=y
+CONFIG_MEMORY_FAILURE=y
+CONFIG_MINIX_SUBPARTITION=y
+CONFIG_MODULES=y
+CONFIG_NAMESPACES=y
+CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_9P=y
+CONFIG_NET_ACT_BPF=y
+CONFIG_NET_CLS_CGROUP=y
+CONFIG_NETDEVICES=y
+CONFIG_NET_EMATCH=y
+CONFIG_NETFILTER_NETLINK_LOG=y
+CONFIG_NETFILTER_NETLINK_QUEUE=y
+CONFIG_NETFILTER_XTABLES=y
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_MATCH_COMMENT=y
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
+CONFIG_NETFILTER_XT_MATCH_MARK=y
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
+CONFIG_NETFILTER_XT_NAT=y
+CONFIG_NETFILTER_XT_TARGET_MASQUERADE=y
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_NET_L3_MASTER_DEV=y
+CONFIG_NETLABEL=y
+CONFIG_NET_SCH_DEFAULT=y
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_FQ_CODEL=y
+CONFIG_NET_TC_SKB_EXT=y
+CONFIG_NET_VRF=y
+CONFIG_NET=y
+CONFIG_NF_CONNTRACK=y
+CONFIG_NF_NAT_MASQUERADE=y
+CONFIG_NF_NAT=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NO_HZ=y
+CONFIG_NR_CPUS=128
+CONFIG_NUMA_BALANCING=y
+CONFIG_NUMA=y
+CONFIG_NVMEM=y
+CONFIG_OSF_PARTITION=y
+CONFIG_OVERLAY_FS_INDEX=y
+CONFIG_OVERLAY_FS_METACOPY=y
+CONFIG_OVERLAY_FS_XINO_AUTO=y
+CONFIG_OVERLAY_FS=y
+CONFIG_PACKET=y
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI=y
+CONFIG_PHYSICAL_ALIGN=0x1000000
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PREEMPT=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROFILING=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_RC_DEVICES=y
+CONFIG_RC_LOOPBACK=y
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_SCHEDSTATS=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_DETECT_IRQ=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_NR_UARTS=32
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SGI_PARTITION=y
+CONFIG_SMP=y
+CONFIG_SOCK_CGROUP_DATA=y
+CONFIG_SOLARIS_X86_PARTITION=y
+CONFIG_SUN_PARTITION=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSVIPC=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_XACCT=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_MD5SIG=y
+CONFIG_TLS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TMPFS=y
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TUN=y
+CONFIG_UNIXWARE_DISKLABEL=y
+CONFIG_UNIX=y
+CONFIG_USER_NS=y
+CONFIG_VALIDATE_FS_PARSER=y
+CONFIG_VETH=y
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_FS=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VLAN_8021Q=y
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_USER=y
+CONFIG_ZEROPLUS_FF=y
diff --git a/tools/testing/selftests/hid/config.x86_64 b/tools/testing/selftests/hid/config.x86_64
new file mode 100644
index 000000000000..a8721f403c21
--- /dev/null
+++ b/tools/testing/selftests/hid/config.x86_64
@@ -0,0 +1,4 @@
+CONFIG_X86_ACPI_CPUFREQ=y
+CONFIG_X86_CPUID=y
+CONFIG_X86_MSR=y
+CONFIG_X86_POWERNOW_K8=y
diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c
new file mode 100644
index 000000000000..2cf96f818f25
--- /dev/null
+++ b/tools/testing/selftests/hid/hid_bpf.c
@@ -0,0 +1,869 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Red Hat */
+#include "hid.skel.h"
+
+#include "../kselftest_harness.h"
+
+#include <bpf/bpf.h>
+#include <fcntl.h>
+#include <fnmatch.h>
+#include <dirent.h>
+#include <poll.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <linux/hidraw.h>
+#include <linux/uhid.h>
+
+#define SHOW_UHID_DEBUG 0
+
+static unsigned char rdesc[] = {
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x09, 0x21, /* Usage (Vendor Usage 0x21) */
+ 0xa1, 0x01, /* COLLECTION (Application) */
+ 0x09, 0x01, /* Usage (Vendor Usage 0x01) */
+ 0xa1, 0x00, /* COLLECTION (Physical) */
+ 0x85, 0x02, /* REPORT_ID (2) */
+ 0x19, 0x01, /* USAGE_MINIMUM (1) */
+ 0x29, 0x08, /* USAGE_MAXIMUM (3) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0xff, /* LOGICAL_MAXIMUM (255) */
+ 0x95, 0x08, /* REPORT_COUNT (8) */
+ 0x75, 0x08, /* REPORT_SIZE (8) */
+ 0x81, 0x02, /* INPUT (Data,Var,Abs) */
+ 0xc0, /* END_COLLECTION */
+ 0x09, 0x01, /* Usage (Vendor Usage 0x01) */
+ 0xa1, 0x00, /* COLLECTION (Physical) */
+ 0x85, 0x01, /* REPORT_ID (1) */
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x19, 0x01, /* USAGE_MINIMUM (1) */
+ 0x29, 0x03, /* USAGE_MAXIMUM (3) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x95, 0x03, /* REPORT_COUNT (3) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x81, 0x02, /* INPUT (Data,Var,Abs) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x05, /* REPORT_SIZE (5) */
+ 0x81, 0x01, /* INPUT (Cnst,Var,Abs) */
+ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
+ 0x09, 0x30, /* USAGE (X) */
+ 0x09, 0x31, /* USAGE (Y) */
+ 0x15, 0x81, /* LOGICAL_MINIMUM (-127) */
+ 0x25, 0x7f, /* LOGICAL_MAXIMUM (127) */
+ 0x75, 0x10, /* REPORT_SIZE (16) */
+ 0x95, 0x02, /* REPORT_COUNT (2) */
+ 0x81, 0x06, /* INPUT (Data,Var,Rel) */
+
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x19, 0x01, /* USAGE_MINIMUM (1) */
+ 0x29, 0x03, /* USAGE_MAXIMUM (3) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x95, 0x03, /* REPORT_COUNT (3) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x91, 0x02, /* Output (Data,Var,Abs) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x05, /* REPORT_SIZE (5) */
+ 0x91, 0x01, /* Output (Cnst,Var,Abs) */
+
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x19, 0x06, /* USAGE_MINIMUM (6) */
+ 0x29, 0x08, /* USAGE_MAXIMUM (8) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x95, 0x03, /* REPORT_COUNT (3) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0xb1, 0x02, /* Feature (Data,Var,Abs) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x05, /* REPORT_SIZE (5) */
+ 0x91, 0x01, /* Output (Cnst,Var,Abs) */
+
+ 0xc0, /* END_COLLECTION */
+ 0xc0, /* END_COLLECTION */
+};
+
+static __u8 feature_data[] = { 1, 2 };
+
+struct attach_prog_args {
+ int prog_fd;
+ unsigned int hid;
+ int retval;
+ int insert_head;
+};
+
+struct hid_hw_request_syscall_args {
+ __u8 data[10];
+ unsigned int hid;
+ int retval;
+ size_t size;
+ enum hid_report_type type;
+ __u8 request_type;
+};
+
+#define ASSERT_OK(data) ASSERT_FALSE(data)
+#define ASSERT_OK_PTR(ptr) ASSERT_NE(NULL, ptr)
+
+#define UHID_LOG(fmt, ...) do { \
+ if (SHOW_UHID_DEBUG) \
+ TH_LOG(fmt, ##__VA_ARGS__); \
+} while (0)
+
+static pthread_mutex_t uhid_started_mtx = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t uhid_started = PTHREAD_COND_INITIALIZER;
+
+/* no need to protect uhid_stopped, only one thread accesses it */
+static bool uhid_stopped;
+
+static int uhid_write(struct __test_metadata *_metadata, int fd, const struct uhid_event *ev)
+{
+ ssize_t ret;
+
+ ret = write(fd, ev, sizeof(*ev));
+ if (ret < 0) {
+ TH_LOG("Cannot write to uhid: %m");
+ return -errno;
+ } else if (ret != sizeof(*ev)) {
+ TH_LOG("Wrong size written to uhid: %zd != %zu",
+ ret, sizeof(ev));
+ return -EFAULT;
+ } else {
+ return 0;
+ }
+}
+
+static int uhid_create(struct __test_metadata *_metadata, int fd, int rand_nb)
+{
+ struct uhid_event ev;
+ char buf[25];
+
+ sprintf(buf, "test-uhid-device-%d", rand_nb);
+
+ memset(&ev, 0, sizeof(ev));
+ ev.type = UHID_CREATE;
+ strcpy((char *)ev.u.create.name, buf);
+ ev.u.create.rd_data = rdesc;
+ ev.u.create.rd_size = sizeof(rdesc);
+ ev.u.create.bus = BUS_USB;
+ ev.u.create.vendor = 0x0001;
+ ev.u.create.product = 0x0a37;
+ ev.u.create.version = 0;
+ ev.u.create.country = 0;
+
+ sprintf(buf, "%d", rand_nb);
+ strcpy((char *)ev.u.create.phys, buf);
+
+ return uhid_write(_metadata, fd, &ev);
+}
+
+static void uhid_destroy(struct __test_metadata *_metadata, int fd)
+{
+ struct uhid_event ev;
+
+ memset(&ev, 0, sizeof(ev));
+ ev.type = UHID_DESTROY;
+
+ uhid_write(_metadata, fd, &ev);
+}
+
+static int uhid_event(struct __test_metadata *_metadata, int fd)
+{
+ struct uhid_event ev, answer;
+ ssize_t ret;
+
+ memset(&ev, 0, sizeof(ev));
+ ret = read(fd, &ev, sizeof(ev));
+ if (ret == 0) {
+ UHID_LOG("Read HUP on uhid-cdev");
+ return -EFAULT;
+ } else if (ret < 0) {
+ UHID_LOG("Cannot read uhid-cdev: %m");
+ return -errno;
+ } else if (ret != sizeof(ev)) {
+ UHID_LOG("Invalid size read from uhid-dev: %zd != %zu",
+ ret, sizeof(ev));
+ return -EFAULT;
+ }
+
+ switch (ev.type) {
+ case UHID_START:
+ pthread_mutex_lock(&uhid_started_mtx);
+ pthread_cond_signal(&uhid_started);
+ pthread_mutex_unlock(&uhid_started_mtx);
+
+ UHID_LOG("UHID_START from uhid-dev");
+ break;
+ case UHID_STOP:
+ uhid_stopped = true;
+
+ UHID_LOG("UHID_STOP from uhid-dev");
+ break;
+ case UHID_OPEN:
+ UHID_LOG("UHID_OPEN from uhid-dev");
+ break;
+ case UHID_CLOSE:
+ UHID_LOG("UHID_CLOSE from uhid-dev");
+ break;
+ case UHID_OUTPUT:
+ UHID_LOG("UHID_OUTPUT from uhid-dev");
+ break;
+ case UHID_GET_REPORT:
+ UHID_LOG("UHID_GET_REPORT from uhid-dev");
+
+ answer.type = UHID_GET_REPORT_REPLY;
+ answer.u.get_report_reply.id = ev.u.get_report.id;
+ answer.u.get_report_reply.err = ev.u.get_report.rnum == 1 ? 0 : -EIO;
+ answer.u.get_report_reply.size = sizeof(feature_data);
+ memcpy(answer.u.get_report_reply.data, feature_data, sizeof(feature_data));
+
+ uhid_write(_metadata, fd, &answer);
+
+ break;
+ case UHID_SET_REPORT:
+ UHID_LOG("UHID_SET_REPORT from uhid-dev");
+ break;
+ default:
+ TH_LOG("Invalid event from uhid-dev: %u", ev.type);
+ }
+
+ return 0;
+}
+
+struct uhid_thread_args {
+ int fd;
+ struct __test_metadata *_metadata;
+};
+static void *uhid_read_events_thread(void *arg)
+{
+ struct uhid_thread_args *args = (struct uhid_thread_args *)arg;
+ struct __test_metadata *_metadata = args->_metadata;
+ struct pollfd pfds[1];
+ int fd = args->fd;
+ int ret = 0;
+
+ pfds[0].fd = fd;
+ pfds[0].events = POLLIN;
+
+ uhid_stopped = false;
+
+ while (!uhid_stopped) {
+ ret = poll(pfds, 1, 100);
+ if (ret < 0) {
+ TH_LOG("Cannot poll for fds: %m");
+ break;
+ }
+ if (pfds[0].revents & POLLIN) {
+ ret = uhid_event(_metadata, fd);
+ if (ret)
+ break;
+ }
+ }
+
+ return (void *)(long)ret;
+}
+
+static int uhid_start_listener(struct __test_metadata *_metadata, pthread_t *tid, int uhid_fd)
+{
+ struct uhid_thread_args args = {
+ .fd = uhid_fd,
+ ._metadata = _metadata,
+ };
+ int err;
+
+ pthread_mutex_lock(&uhid_started_mtx);
+ err = pthread_create(tid, NULL, uhid_read_events_thread, (void *)&args);
+ ASSERT_EQ(0, err) {
+ TH_LOG("Could not start the uhid thread: %d", err);
+ pthread_mutex_unlock(&uhid_started_mtx);
+ close(uhid_fd);
+ return -EIO;
+ }
+ pthread_cond_wait(&uhid_started, &uhid_started_mtx);
+ pthread_mutex_unlock(&uhid_started_mtx);
+
+ return 0;
+}
+
+static int uhid_send_event(struct __test_metadata *_metadata, int fd, __u8 *buf, size_t size)
+{
+ struct uhid_event ev;
+
+ if (size > sizeof(ev.u.input.data))
+ return -E2BIG;
+
+ memset(&ev, 0, sizeof(ev));
+ ev.type = UHID_INPUT2;
+ ev.u.input2.size = size;
+
+ memcpy(ev.u.input2.data, buf, size);
+
+ return uhid_write(_metadata, fd, &ev);
+}
+
+static int setup_uhid(struct __test_metadata *_metadata, int rand_nb)
+{
+ int fd;
+ const char *path = "/dev/uhid";
+ int ret;
+
+ fd = open(path, O_RDWR | O_CLOEXEC);
+ ASSERT_GE(fd, 0) TH_LOG("open uhid-cdev failed; %d", fd);
+
+ ret = uhid_create(_metadata, fd, rand_nb);
+ ASSERT_EQ(0, ret) {
+ TH_LOG("create uhid device failed: %d", ret);
+ close(fd);
+ }
+
+ return fd;
+}
+
+static bool match_sysfs_device(int dev_id, const char *workdir, struct dirent *dir)
+{
+ const char *target = "0003:0001:0A37.*";
+ char phys[512];
+ char uevent[1024];
+ char temp[512];
+ int fd, nread;
+ bool found = false;
+
+ if (fnmatch(target, dir->d_name, 0))
+ return false;
+
+ /* we found the correct VID/PID, now check for phys */
+ sprintf(uevent, "%s/%s/uevent", workdir, dir->d_name);
+
+ fd = open(uevent, O_RDONLY | O_NONBLOCK);
+ if (fd < 0)
+ return false;
+
+ sprintf(phys, "PHYS=%d", dev_id);
+
+ nread = read(fd, temp, ARRAY_SIZE(temp));
+ if (nread > 0 && (strstr(temp, phys)) != NULL)
+ found = true;
+
+ close(fd);
+
+ return found;
+}
+
+static int get_hid_id(int dev_id)
+{
+ const char *workdir = "/sys/devices/virtual/misc/uhid";
+ const char *str_id;
+ DIR *d;
+ struct dirent *dir;
+ int found = -1, attempts = 3;
+
+ /* it would be nice to be able to use nftw, but the no_alu32 target doesn't support it */
+
+ while (found < 0 && attempts > 0) {
+ attempts--;
+ d = opendir(workdir);
+ if (d) {
+ while ((dir = readdir(d)) != NULL) {
+ if (!match_sysfs_device(dev_id, workdir, dir))
+ continue;
+
+ str_id = dir->d_name + sizeof("0003:0001:0A37.");
+ found = (int)strtol(str_id, NULL, 16);
+
+ break;
+ }
+ closedir(d);
+ }
+ if (found < 0)
+ usleep(100000);
+ }
+
+ return found;
+}
+
+static int get_hidraw(int dev_id)
+{
+ const char *workdir = "/sys/devices/virtual/misc/uhid";
+ char sysfs[1024];
+ DIR *d, *subd;
+ struct dirent *dir, *subdir;
+ int i, found = -1;
+
+ /* retry 5 times in case the system is loaded */
+ for (i = 5; i > 0; i--) {
+ usleep(10);
+ d = opendir(workdir);
+
+ if (!d)
+ continue;
+
+ while ((dir = readdir(d)) != NULL) {
+ if (!match_sysfs_device(dev_id, workdir, dir))
+ continue;
+
+ sprintf(sysfs, "%s/%s/hidraw", workdir, dir->d_name);
+
+ subd = opendir(sysfs);
+ if (!subd)
+ continue;
+
+ while ((subdir = readdir(subd)) != NULL) {
+ if (fnmatch("hidraw*", subdir->d_name, 0))
+ continue;
+
+ found = atoi(subdir->d_name + strlen("hidraw"));
+ }
+
+ closedir(subd);
+
+ if (found > 0)
+ break;
+ }
+ closedir(d);
+ }
+
+ return found;
+}
+
+static int open_hidraw(int dev_id)
+{
+ int hidraw_number;
+ char hidraw_path[64] = { 0 };
+
+ hidraw_number = get_hidraw(dev_id);
+ if (hidraw_number < 0)
+ return hidraw_number;
+
+ /* open hidraw node to check the other side of the pipe */
+ sprintf(hidraw_path, "/dev/hidraw%d", hidraw_number);
+ return open(hidraw_path, O_RDWR | O_NONBLOCK);
+}
+
+FIXTURE(hid_bpf) {
+ int dev_id;
+ int uhid_fd;
+ int hidraw_fd;
+ int hid_id;
+ pthread_t tid;
+ struct hid *skel;
+ int hid_links[3]; /* max number of programs loaded in a single test */
+};
+static void detach_bpf(FIXTURE_DATA(hid_bpf) * self)
+{
+ int i;
+
+ if (self->hidraw_fd)
+ close(self->hidraw_fd);
+ self->hidraw_fd = 0;
+
+ for (i = 0; i < ARRAY_SIZE(self->hid_links); i++) {
+ if (self->hid_links[i])
+ close(self->hid_links[i]);
+ }
+
+ hid__destroy(self->skel);
+ self->skel = NULL;
+}
+
+FIXTURE_TEARDOWN(hid_bpf) {
+ void *uhid_err;
+
+ uhid_destroy(_metadata, self->uhid_fd);
+
+ detach_bpf(self);
+ pthread_join(self->tid, &uhid_err);
+}
+#define TEARDOWN_LOG(fmt, ...) do { \
+ TH_LOG(fmt, ##__VA_ARGS__); \
+ hid_bpf_teardown(_metadata, self, variant); \
+} while (0)
+
+FIXTURE_SETUP(hid_bpf)
+{
+ time_t t;
+ int err;
+
+ /* initialize random number generator */
+ srand((unsigned int)time(&t));
+
+ self->dev_id = rand() % 1024;
+
+ self->uhid_fd = setup_uhid(_metadata, self->dev_id);
+
+ /* locate the uev, self, variant);ent file of the created device */
+ self->hid_id = get_hid_id(self->dev_id);
+ ASSERT_GT(self->hid_id, 0)
+ TEARDOWN_LOG("Could not locate uhid device id: %d", self->hid_id);
+
+ err = uhid_start_listener(_metadata, &self->tid, self->uhid_fd);
+ ASSERT_EQ(0, err) TEARDOWN_LOG("could not start udev listener: %d", err);
+}
+
+struct test_program {
+ const char *name;
+ int insert_head;
+};
+#define LOAD_PROGRAMS(progs) \
+ load_programs(progs, ARRAY_SIZE(progs), _metadata, self, variant)
+#define LOAD_BPF \
+ load_programs(NULL, 0, _metadata, self, variant)
+static void load_programs(const struct test_program programs[],
+ const size_t progs_count,
+ struct __test_metadata *_metadata,
+ FIXTURE_DATA(hid_bpf) * self,
+ const FIXTURE_VARIANT(hid_bpf) * variant)
+{
+ int attach_fd, err = -EINVAL;
+ struct attach_prog_args args = {
+ .retval = -1,
+ };
+ DECLARE_LIBBPF_OPTS(bpf_test_run_opts, tattr,
+ .ctx_in = &args,
+ .ctx_size_in = sizeof(args),
+ );
+
+ ASSERT_LE(progs_count, ARRAY_SIZE(self->hid_links))
+ TH_LOG("too many programs are to be loaded");
+
+ /* open the bpf file */
+ self->skel = hid__open();
+ ASSERT_OK_PTR(self->skel) TEARDOWN_LOG("Error while calling hid__open");
+
+ for (int i = 0; i < progs_count; i++) {
+ struct bpf_program *prog;
+
+ prog = bpf_object__find_program_by_name(*self->skel->skeleton->obj,
+ programs[i].name);
+ ASSERT_OK_PTR(prog) TH_LOG("can not find program by name '%s'", programs[i].name);
+
+ bpf_program__set_autoload(prog, true);
+ }
+
+ err = hid__load(self->skel);
+ ASSERT_OK(err) TH_LOG("hid_skel_load failed: %d", err);
+
+ attach_fd = bpf_program__fd(self->skel->progs.attach_prog);
+ ASSERT_GE(attach_fd, 0) TH_LOG("locate attach_prog: %d", attach_fd);
+
+ for (int i = 0; i < progs_count; i++) {
+ struct bpf_program *prog;
+
+ prog = bpf_object__find_program_by_name(*self->skel->skeleton->obj,
+ programs[i].name);
+ ASSERT_OK_PTR(prog) TH_LOG("can not find program by name '%s'", programs[i].name);
+
+ args.prog_fd = bpf_program__fd(prog);
+ args.hid = self->hid_id;
+ args.insert_head = programs[i].insert_head;
+ err = bpf_prog_test_run_opts(attach_fd, &tattr);
+ ASSERT_GE(args.retval, 0)
+ TH_LOG("attach_hid(%s): %d", programs[i].name, args.retval);
+
+ self->hid_links[i] = args.retval;
+ }
+
+ self->hidraw_fd = open_hidraw(self->dev_id);
+ ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw");
+}
+
+/*
+ * A simple test to see if the fixture is working fine.
+ * If this fails, none of the other tests will pass.
+ */
+TEST_F(hid_bpf, test_create_uhid)
+{
+}
+
+/*
+ * Attach hid_first_event to the given uhid device,
+ * retrieve and open the matching hidraw node,
+ * inject one event in the uhid device,
+ * check that the program sees it and can change the data
+ */
+TEST_F(hid_bpf, raw_event)
+{
+ const struct test_program progs[] = {
+ { .name = "hid_first_event" },
+ };
+ __u8 buf[10] = {0};
+ int err;
+
+ LOAD_PROGRAMS(progs);
+
+ /* check that the program is correctly loaded */
+ ASSERT_EQ(self->skel->data->callback_check, 52) TH_LOG("callback_check1");
+ ASSERT_EQ(self->skel->data->callback2_check, 52) TH_LOG("callback2_check1");
+
+ /* inject one event */
+ buf[0] = 1;
+ buf[1] = 42;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* check that hid_first_event() was executed */
+ ASSERT_EQ(self->skel->data->callback_check, 42) TH_LOG("callback_check1");
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[0], 1);
+ ASSERT_EQ(buf[2], 47);
+
+ /* inject another event */
+ memset(buf, 0, sizeof(buf));
+ buf[0] = 1;
+ buf[1] = 47;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* check that hid_first_event() was executed */
+ ASSERT_EQ(self->skel->data->callback_check, 47) TH_LOG("callback_check1");
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[2], 52);
+}
+
+/*
+ * Ensures that we can attach/detach programs
+ */
+TEST_F(hid_bpf, test_attach_detach)
+{
+ const struct test_program progs[] = {
+ { .name = "hid_first_event" },
+ { .name = "hid_second_event" },
+ };
+ __u8 buf[10] = {0};
+ int err, link;
+
+ LOAD_PROGRAMS(progs);
+
+ link = self->hid_links[0];
+ ASSERT_GT(link, 0) TH_LOG("HID-BPF link not created");
+
+ /* inject one event */
+ buf[0] = 1;
+ buf[1] = 42;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[0], 1);
+ ASSERT_EQ(buf[2], 47);
+
+ /* make sure both programs are run */
+ ASSERT_EQ(buf[3], 52);
+
+ /* pin the first program and immediately unpin it */
+#define PIN_PATH "/sys/fs/bpf/hid_first_event"
+ err = bpf_obj_pin(link, PIN_PATH);
+ ASSERT_OK(err) TH_LOG("error while calling bpf_obj_pin");
+ remove(PIN_PATH);
+#undef PIN_PATH
+ usleep(100000);
+
+ /* detach the program */
+ detach_bpf(self);
+
+ self->hidraw_fd = open_hidraw(self->dev_id);
+ ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw");
+
+ /* inject another event */
+ memset(buf, 0, sizeof(buf));
+ buf[0] = 1;
+ buf[1] = 47;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw_no_bpf");
+ ASSERT_EQ(buf[0], 1);
+ ASSERT_EQ(buf[1], 47);
+ ASSERT_EQ(buf[2], 0);
+ ASSERT_EQ(buf[3], 0);
+
+ /* re-attach our program */
+
+ LOAD_PROGRAMS(progs);
+
+ /* inject one event */
+ memset(buf, 0, sizeof(buf));
+ buf[0] = 1;
+ buf[1] = 42;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[0], 1);
+ ASSERT_EQ(buf[2], 47);
+ ASSERT_EQ(buf[3], 52);
+}
+
+/*
+ * Attach hid_change_report_id to the given uhid device,
+ * retrieve and open the matching hidraw node,
+ * inject one event in the uhid device,
+ * check that the program sees it and can change the data
+ */
+TEST_F(hid_bpf, test_hid_change_report)
+{
+ const struct test_program progs[] = {
+ { .name = "hid_change_report_id" },
+ };
+ __u8 buf[10] = {0};
+ int err;
+
+ LOAD_PROGRAMS(progs);
+
+ /* inject one event */
+ buf[0] = 1;
+ buf[1] = 42;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 9) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[0], 2);
+ ASSERT_EQ(buf[1], 42);
+ ASSERT_EQ(buf[2], 0) TH_LOG("leftovers_from_previous_test");
+}
+
+/*
+ * Attach hid_user_raw_request to the given uhid device,
+ * call the bpf program from userspace
+ * check that the program is called and does the expected.
+ */
+TEST_F(hid_bpf, test_hid_user_raw_request_call)
+{
+ struct hid_hw_request_syscall_args args = {
+ .retval = -1,
+ .type = HID_FEATURE_REPORT,
+ .request_type = HID_REQ_GET_REPORT,
+ .size = 10,
+ };
+ DECLARE_LIBBPF_OPTS(bpf_test_run_opts, tattrs,
+ .ctx_in = &args,
+ .ctx_size_in = sizeof(args),
+ );
+ int err, prog_fd;
+
+ LOAD_BPF;
+
+ args.hid = self->hid_id;
+ args.data[0] = 1; /* report ID */
+
+ prog_fd = bpf_program__fd(self->skel->progs.hid_user_raw_request);
+
+ err = bpf_prog_test_run_opts(prog_fd, &tattrs);
+ ASSERT_OK(err) TH_LOG("error while calling bpf_prog_test_run_opts");
+
+ ASSERT_EQ(args.retval, 2);
+
+ ASSERT_EQ(args.data[1], 2);
+}
+
+/*
+ * Attach hid_insert{0,1,2} to the given uhid device,
+ * retrieve and open the matching hidraw node,
+ * inject one event in the uhid device,
+ * check that the programs have been inserted in the correct order.
+ */
+TEST_F(hid_bpf, test_hid_attach_flags)
+{
+ const struct test_program progs[] = {
+ {
+ .name = "hid_test_insert2",
+ .insert_head = 0,
+ },
+ {
+ .name = "hid_test_insert1",
+ .insert_head = 1,
+ },
+ {
+ .name = "hid_test_insert3",
+ .insert_head = 0,
+ },
+ };
+ __u8 buf[10] = {0};
+ int err;
+
+ LOAD_PROGRAMS(progs);
+
+ /* inject one event */
+ buf[0] = 1;
+ uhid_send_event(_metadata, self->uhid_fd, buf, 6);
+
+ /* read the data from hidraw */
+ memset(buf, 0, sizeof(buf));
+ err = read(self->hidraw_fd, buf, sizeof(buf));
+ ASSERT_EQ(err, 6) TH_LOG("read_hidraw");
+ ASSERT_EQ(buf[1], 1);
+ ASSERT_EQ(buf[2], 2);
+ ASSERT_EQ(buf[3], 3);
+}
+
+/*
+ * Attach hid_rdesc_fixup to the given uhid device,
+ * retrieve and open the matching hidraw node,
+ * check that the hidraw report descriptor has been updated.
+ */
+TEST_F(hid_bpf, test_rdesc_fixup)
+{
+ struct hidraw_report_descriptor rpt_desc = {0};
+ const struct test_program progs[] = {
+ { .name = "hid_rdesc_fixup" },
+ };
+ int err, desc_size;
+
+ LOAD_PROGRAMS(progs);
+
+ /* check that hid_rdesc_fixup() was executed */
+ ASSERT_EQ(self->skel->data->callback2_check, 0x21);
+
+ /* read the exposed report descriptor from hidraw */
+ err = ioctl(self->hidraw_fd, HIDIOCGRDESCSIZE, &desc_size);
+ ASSERT_GE(err, 0) TH_LOG("error while reading HIDIOCGRDESCSIZE: %d", err);
+
+ /* ensure the new size of the rdesc is bigger than the old one */
+ ASSERT_GT(desc_size, sizeof(rdesc));
+
+ rpt_desc.size = desc_size;
+ err = ioctl(self->hidraw_fd, HIDIOCGRDESC, &rpt_desc);
+ ASSERT_GE(err, 0) TH_LOG("error while reading HIDIOCGRDESC: %d", err);
+
+ ASSERT_EQ(rpt_desc.value[4], 0x42);
+}
+
+static int libbpf_print_fn(enum libbpf_print_level level,
+ const char *format, va_list args)
+{
+ char buf[1024];
+
+ if (level == LIBBPF_DEBUG)
+ return 0;
+
+ snprintf(buf, sizeof(buf), "# %s", format);
+
+ vfprintf(stdout, buf, args);
+ return 0;
+}
+
+static void __attribute__((constructor)) __constructor_order_last(void)
+{
+ if (!__constructor_order)
+ __constructor_order = _CONSTRUCTOR_ORDER_BACKWARD;
+}
+
+int main(int argc, char **argv)
+{
+ /* Use libbpf 1.0 API mode */
+ libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
+ libbpf_set_print(libbpf_print_fn);
+
+ return test_harness_run(argc, argv);
+}
diff --git a/tools/testing/selftests/hid/progs/hid.c b/tools/testing/selftests/hid/progs/hid.c
new file mode 100644
index 000000000000..88c593f753b5
--- /dev/null
+++ b/tools/testing/selftests/hid/progs/hid.c
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Red hat */
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "hid_bpf_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+
+struct attach_prog_args {
+ int prog_fd;
+ unsigned int hid;
+ int retval;
+ int insert_head;
+};
+
+__u64 callback_check = 52;
+__u64 callback2_check = 52;
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_first_event, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *rw_data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 3 /* size */);
+
+ if (!rw_data)
+ return 0; /* EPERM check */
+
+ callback_check = rw_data[1];
+
+ rw_data[2] = rw_data[1] + 5;
+
+ return hid_ctx->size;
+}
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_second_event, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *rw_data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 4 /* size */);
+
+ if (!rw_data)
+ return 0; /* EPERM check */
+
+ rw_data[3] = rw_data[2] + 5;
+
+ return hid_ctx->size;
+}
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_change_report_id, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *rw_data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 3 /* size */);
+
+ if (!rw_data)
+ return 0; /* EPERM check */
+
+ rw_data[0] = 2;
+
+ return 9;
+}
+
+SEC("syscall")
+int attach_prog(struct attach_prog_args *ctx)
+{
+ ctx->retval = hid_bpf_attach_prog(ctx->hid,
+ ctx->prog_fd,
+ ctx->insert_head ? HID_BPF_FLAG_INSERT_HEAD :
+ HID_BPF_FLAG_NONE);
+ return 0;
+}
+
+struct hid_hw_request_syscall_args {
+ /* data needs to come at offset 0 so we can use it in calls */
+ __u8 data[10];
+ unsigned int hid;
+ int retval;
+ size_t size;
+ enum hid_report_type type;
+ __u8 request_type;
+};
+
+SEC("syscall")
+int hid_user_raw_request(struct hid_hw_request_syscall_args *args)
+{
+ struct hid_bpf_ctx *ctx;
+ const size_t size = args->size;
+ int i, ret = 0;
+
+ if (size > sizeof(args->data))
+ return -7; /* -E2BIG */
+
+ ctx = hid_bpf_allocate_context(args->hid);
+ if (!ctx)
+ return -1; /* EPERM check */
+
+ ret = hid_bpf_hw_request(ctx,
+ args->data,
+ size,
+ args->type,
+ args->request_type);
+ args->retval = ret;
+
+ hid_bpf_release_context(ctx);
+
+ return 0;
+}
+
+static const __u8 rdesc[] = {
+ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
+ 0x09, 0x32, /* USAGE (Z) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x81, 0x06, /* INPUT (Data,Var,Rel) */
+
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x19, 0x01, /* USAGE_MINIMUM (1) */
+ 0x29, 0x03, /* USAGE_MAXIMUM (3) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x95, 0x03, /* REPORT_COUNT (3) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x91, 0x02, /* Output (Data,Var,Abs) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x05, /* REPORT_SIZE (5) */
+ 0x91, 0x01, /* Output (Cnst,Var,Abs) */
+
+ 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
+ 0x19, 0x06, /* USAGE_MINIMUM (6) */
+ 0x29, 0x08, /* USAGE_MAXIMUM (8) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x95, 0x03, /* REPORT_COUNT (3) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0xb1, 0x02, /* Feature (Data,Var,Abs) */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x05, /* REPORT_SIZE (5) */
+ 0x91, 0x01, /* Output (Cnst,Var,Abs) */
+
+ 0xc0, /* END_COLLECTION */
+ 0xc0, /* END_COLLECTION */
+};
+
+SEC("?fmod_ret/hid_bpf_rdesc_fixup")
+int BPF_PROG(hid_rdesc_fixup, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 4096 /* size */);
+
+ if (!data)
+ return 0; /* EPERM check */
+
+ callback2_check = data[4];
+
+ /* insert rdesc at offset 73 */
+ __builtin_memcpy(&data[73], rdesc, sizeof(rdesc));
+
+ /* Change Usage Vendor globally */
+ data[4] = 0x42;
+
+ return sizeof(rdesc) + 73;
+}
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_test_insert1, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 4 /* size */);
+
+ if (!data)
+ return 0; /* EPERM check */
+
+ /* we need to be run first */
+ if (data[2] || data[3])
+ return -1;
+
+ data[1] = 1;
+
+ return 0;
+}
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_test_insert2, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 4 /* size */);
+
+ if (!data)
+ return 0; /* EPERM check */
+
+ /* after insert0 and before insert2 */
+ if (!data[1] || data[3])
+ return -1;
+
+ data[2] = 2;
+
+ return 0;
+}
+
+SEC("?fmod_ret/hid_bpf_device_event")
+int BPF_PROG(hid_test_insert3, struct hid_bpf_ctx *hid_ctx)
+{
+ __u8 *data = hid_bpf_get_data(hid_ctx, 0 /* offset */, 4 /* size */);
+
+ if (!data)
+ return 0; /* EPERM check */
+
+ /* at the end */
+ if (!data[1] || !data[2])
+ return -1;
+
+ data[3] = 3;
+
+ return 0;
+}
diff --git a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
new file mode 100644
index 000000000000..4fff31dbe0e7
--- /dev/null
+++ b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2022 Benjamin Tissoires
+ */
+
+#ifndef __HID_BPF_HELPERS_H
+#define __HID_BPF_HELPERS_H
+
+/* following are kfuncs exported by HID for HID-BPF */
+extern __u8 *hid_bpf_get_data(struct hid_bpf_ctx *ctx,
+ unsigned int offset,
+ const size_t __sz) __ksym;
+extern int hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, u32 flags) __ksym;
+extern struct hid_bpf_ctx *hid_bpf_allocate_context(unsigned int hid_id) __ksym;
+extern void hid_bpf_release_context(struct hid_bpf_ctx *ctx) __ksym;
+extern int hid_bpf_hw_request(struct hid_bpf_ctx *ctx,
+ __u8 *data,
+ size_t buf__sz,
+ enum hid_report_type type,
+ enum hid_class_request reqtype) __ksym;
+
+#endif /* __HID_BPF_HELPERS_H */
diff --git a/tools/testing/selftests/hid/vmtest.sh b/tools/testing/selftests/hid/vmtest.sh
new file mode 100755
index 000000000000..90f34150f257
--- /dev/null
+++ b/tools/testing/selftests/hid/vmtest.sh
@@ -0,0 +1,284 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+set -u
+set -e
+
+# This script currently only works for x86_64
+ARCH="$(uname -m)"
+case "${ARCH}" in
+x86_64)
+ QEMU_BINARY=qemu-system-x86_64
+ BZIMAGE="arch/x86/boot/bzImage"
+ ;;
+*)
+ echo "Unsupported architecture"
+ exit 1
+ ;;
+esac
+DEFAULT_COMMAND="./hid_bpf"
+SCRIPT_DIR="$(dirname $(realpath $0))"
+OUTPUT_DIR="$SCRIPT_DIR/results"
+KCONFIG_REL_PATHS=("${SCRIPT_DIR}/config" "${SCRIPT_DIR}/config.common" "${SCRIPT_DIR}/config.${ARCH}")
+B2C_URL="https://gitlab.freedesktop.org/mupuf/boot2container/-/raw/master/vm2c.py"
+NUM_COMPILE_JOBS="$(nproc)"
+LOG_FILE_BASE="$(date +"hid_selftests.%Y-%m-%d_%H-%M-%S")"
+LOG_FILE="${LOG_FILE_BASE}.log"
+EXIT_STATUS_FILE="${LOG_FILE_BASE}.exit_status"
+CONTAINER_IMAGE="registry.fedoraproject.org/fedora:36"
+
+usage()
+{
+ cat <<EOF
+Usage: $0 [-i] [-s] [-d <output_dir>] -- [<command>]
+
+<command> is the command you would normally run when you are in
+tools/testing/selftests/bpf. e.g:
+
+ $0 -- ./hid_bpf
+
+If no command is specified and a debug shell (-s) is not requested,
+"${DEFAULT_COMMAND}" will be run by default.
+
+If you build your kernel using KBUILD_OUTPUT= or O= options, these
+can be passed as environment variables to the script:
+
+ O=<kernel_build_path> $0 -- ./hid_bpf
+
+or
+
+ KBUILD_OUTPUT=<kernel_build_path> $0 -- ./hid_bpf
+
+Options:
+
+ -u) Update the boot2container script to a newer version.
+ -d) Update the output directory (default: ${OUTPUT_DIR})
+ -j) Number of jobs for compilation, similar to -j in make
+ (default: ${NUM_COMPILE_JOBS})
+ -s) Instead of powering off the VM, start an interactive
+ shell. If <command> is specified, the shell runs after
+ the command finishes executing
+EOF
+}
+
+download()
+{
+ local file="$1"
+
+ echo "Downloading $file..." >&2
+ curl -Lsf "$file" -o "${@:2}"
+}
+
+recompile_kernel()
+{
+ local kernel_checkout="$1"
+ local make_command="$2"
+
+ cd "${kernel_checkout}"
+
+ ${make_command} olddefconfig
+ ${make_command}
+}
+
+update_selftests()
+{
+ local kernel_checkout="$1"
+ local selftests_dir="${kernel_checkout}/tools/testing/selftests/hid"
+
+ cd "${selftests_dir}"
+ ${make_command}
+}
+
+run_vm()
+{
+ local b2c="$1"
+ local kernel_bzimage="$2"
+ local command="$3"
+ local post_command=""
+
+ if ! which "${QEMU_BINARY}" &> /dev/null; then
+ cat <<EOF
+Could not find ${QEMU_BINARY}
+Please install qemu or set the QEMU_BINARY environment variable.
+EOF
+ exit 1
+ fi
+
+ # alpine (used in post-container requires the PATH to have /bin
+ export PATH=$PATH:/bin
+
+ if [[ "${debug_shell}" != "yes" ]]
+ then
+ touch ${OUTPUT_DIR}/${LOG_FILE}
+ command="mount bpffs -t bpf /sys/fs/bpf/; set -o pipefail ; ${command} 2>&1 | tee ${OUTPUT_DIR}/${LOG_FILE}"
+ post_command="cat ${OUTPUT_DIR}/${LOG_FILE}"
+ else
+ command="mount bpffs -t bpf /sys/fs/bpf/; ${command}"
+ fi
+
+ set +e
+ $b2c --command "${command}" \
+ --kernel ${kernel_bzimage} \
+ --workdir ${OUTPUT_DIR} \
+ --image ${CONTAINER_IMAGE}
+
+ echo $? > ${OUTPUT_DIR}/${EXIT_STATUS_FILE}
+
+ set -e
+
+ ${post_command}
+}
+
+is_rel_path()
+{
+ local path="$1"
+
+ [[ ${path:0:1} != "/" ]]
+}
+
+do_update_kconfig()
+{
+ local kernel_checkout="$1"
+ local kconfig_file="$2"
+
+ rm -f "$kconfig_file" 2> /dev/null
+
+ for config in "${KCONFIG_REL_PATHS[@]}"; do
+ local kconfig_src="${config}"
+ cat "$kconfig_src" >> "$kconfig_file"
+ done
+}
+
+update_kconfig()
+{
+ local kernel_checkout="$1"
+ local kconfig_file="$2"
+
+ if [[ -f "${kconfig_file}" ]]; then
+ local local_modified="$(stat -c %Y "${kconfig_file}")"
+
+ for config in "${KCONFIG_REL_PATHS[@]}"; do
+ local kconfig_src="${config}"
+ local src_modified="$(stat -c %Y "${kconfig_src}")"
+ # Only update the config if it has been updated after the
+ # previously cached config was created. This avoids
+ # unnecessarily compiling the kernel and selftests.
+ if [[ "${src_modified}" -gt "${local_modified}" ]]; then
+ do_update_kconfig "$kernel_checkout" "$kconfig_file"
+ # Once we have found one outdated configuration
+ # there is no need to check other ones.
+ break
+ fi
+ done
+ else
+ do_update_kconfig "$kernel_checkout" "$kconfig_file"
+ fi
+}
+
+main()
+{
+ local script_dir="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
+ local kernel_checkout=$(realpath "${script_dir}"/../../../../)
+ # By default the script searches for the kernel in the checkout directory but
+ # it also obeys environment variables O= and KBUILD_OUTPUT=
+ local kernel_bzimage="${kernel_checkout}/${BZIMAGE}"
+ local command="${DEFAULT_COMMAND}"
+ local update_b2c="no"
+ local debug_shell="no"
+
+ while getopts ':hsud:j:' opt; do
+ case ${opt} in
+ u)
+ update_b2c="yes"
+ ;;
+ d)
+ OUTPUT_DIR="$OPTARG"
+ ;;
+ j)
+ NUM_COMPILE_JOBS="$OPTARG"
+ ;;
+ s)
+ command="/bin/sh"
+ debug_shell="yes"
+ ;;
+ h)
+ usage
+ exit 0
+ ;;
+ \? )
+ echo "Invalid Option: -$OPTARG"
+ usage
+ exit 1
+ ;;
+ : )
+ echo "Invalid Option: -$OPTARG requires an argument"
+ usage
+ exit 1
+ ;;
+ esac
+ done
+ shift $((OPTIND -1))
+
+ # trap 'catch "$?"' EXIT
+
+ if [[ "${debug_shell}" == "no" ]]; then
+ if [[ $# -eq 0 ]]; then
+ echo "No command specified, will run ${DEFAULT_COMMAND} in the vm"
+ else
+ command="$@"
+
+ if [[ "${command}" == "/bin/bash" || "${command}" == "bash" ]]
+ then
+ debug_shell="yes"
+ fi
+ fi
+ fi
+
+ local kconfig_file="${OUTPUT_DIR}/latest.config"
+ local make_command="make -j ${NUM_COMPILE_JOBS} KCONFIG_CONFIG=${kconfig_file}"
+
+ # Figure out where the kernel is being built.
+ # O takes precedence over KBUILD_OUTPUT.
+ if [[ "${O:=""}" != "" ]]; then
+ if is_rel_path "${O}"; then
+ O="$(realpath "${PWD}/${O}")"
+ fi
+ kernel_bzimage="${O}/${BZIMAGE}"
+ make_command="${make_command} O=${O}"
+ elif [[ "${KBUILD_OUTPUT:=""}" != "" ]]; then
+ if is_rel_path "${KBUILD_OUTPUT}"; then
+ KBUILD_OUTPUT="$(realpath "${PWD}/${KBUILD_OUTPUT}")"
+ fi
+ kernel_bzimage="${KBUILD_OUTPUT}/${BZIMAGE}"
+ make_command="${make_command} KBUILD_OUTPUT=${KBUILD_OUTPUT}"
+ fi
+
+ local b2c="${OUTPUT_DIR}/vm2c.py"
+
+ echo "Output directory: ${OUTPUT_DIR}"
+
+ mkdir -p "${OUTPUT_DIR}"
+ update_kconfig "${kernel_checkout}" "${kconfig_file}"
+
+ recompile_kernel "${kernel_checkout}" "${make_command}"
+
+ if [[ "${update_b2c}" == "no" && ! -f "${b2c}" ]]; then
+ echo "vm2c script not found in ${b2c}"
+ update_b2c="yes"
+ fi
+
+ if [[ "${update_b2c}" == "yes" ]]; then
+ download $B2C_URL $b2c
+ chmod +x $b2c
+ fi
+
+ update_selftests "${kernel_checkout}" "${make_command}"
+ run_vm $b2c "${kernel_bzimage}" "${command}"
+ if [[ "${debug_shell}" != "yes" ]]; then
+ echo "Logs saved in ${OUTPUT_DIR}/${LOG_FILE}"
+ fi
+
+ exit $(cat ${OUTPUT_DIR}/${EXIT_STATUS_FILE})
+}
+
+main "$@"
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 10:37:46 +0300